Adobe ADEPT DRM for EPUB circumvented - Page 43

sapient · 03-05-2010, 03:16 AM

Thanks for the info guys. I have the general dep setting set to check essential windows files only, so why should it check the python executables? I changed it to "on for everything except..." but when I try to exclude the python executables from dep, I get an error that 64bit executables can't be excluded - yes, I am using the 64bit version of python with the 64bit version of pycrypto.

Edit: I tried installing the 32bit versions, and it is working fine. It seems the problem is with the 64bit versions, and although my memory is not what it used to be, I seem to recall that it used to work with the 64bit python too in the past... oh well

pietvo · 03-05-2010, 06:11 AM

cpuid0() works through a C interface. It could well be that it is designed to work with 32 bit but not yet adapted to 64 bit.

jah1234 · 03-14-2010, 07:11 PM

Quote:

Originally Posted by i♥cabbages

I have successfully and reproducibly circumvented Adobe's ADEPT DRM system for EPUB files. A discussion of the system and the circumvention is available in a blog post I've made on the subject: Circumventing Adobe ADEPT DRM for EPUB.

Could some please give me step by step intrustion on how use this program. I have all three program scrips) download to my computer, but I don't know what to do next.

pietvo · 03-15-2010, 07:14 AM

Have you installed Python and PyCrypto?

JSWolf · 03-16-2010, 09:49 AM

Quote:

Originally Posted by pietvo

Have you installed Python and PyCrypto?

Python 2.6.x and PyCrypto to go with it. Must be 32-bit versions.

Desertway · 03-16-2010, 03:25 PM

I have been working on this for a few days, on both WinXP and Win7 machines, with no luck. I have Python 2.6.4 and Pycrypto 2.1.0 installed.

I have the latest version of ADE, and have no problem generating the key with ineptkey.pyw. But I cannot decrypt my epubs, even though the dialog box comes up and I am (I believe) inputting the correct path information for the files.

Using ineptepub.pyw v.4, I get the error "Problem Decrypting Session Key".

With ineptepub.pyw v.4.1, I get the error "List assignment index out of range."

Is there anything else I can try? Thanks.

ATimson · 03-16-2010, 03:58 PM

Try using the "..." button to set the path instead of typing it in. For some reason it gets picky sometimes when I try to manually specify the path...

KevinH · 03-16-2010, 04:15 PM

One other thing to try ...

Some ADE encrypted epubs have been created with a buggy zip program (epubs are zip containers). They use different names for the files in the zip central directory and the zip local name, and this confuses things greatly.

So when I run into problems with an ADE epub. I literally unzip it and then rezip it manually with no compression (just storage) or with compression but I am careful to not compress so the mimetype and encryption files.

There is even a special epub zip tool that handles rezipping of files to create an proper epub zip container for Mac OSX (on this forum). I am not sure what is available for Windows.

Then I try using the decryption tool and it has always worked well after that.

Desertway · 03-16-2010, 04:23 PM

Quote:

Originally Posted by ATimson

Try using the "..." button to set the path instead of typing it in. For some reason it gets picky sometimes when I try to manually specify the path...

I actually did do that. I see that the way I wrote it suggests that I manually typed the paths, but I didn't.

Desertway · 03-16-2010, 04:31 PM

Quote:

Originally Posted by KevinH

One other thing to try ...

Some ADE encrypted epubs have been created with a buggy zip program (epubs are zip containers). They use different names for the files in the zip central directory and the zip local name, and this confuses things greatly.

So when I run into problems with an ADE epub. I literally unzip it and then rezip it manually with no compression (just storage) or with compression but I am careful to not compress so the mimetype and encryption files.

There is even a special epub zip tool that handles rezipping of files to create an proper epub zip container for Mac OSX (on this forum). I am not sure what is available for Windows.

Then I try using the decryption tool and it has always worked well after that.

I tried that, and was told that my recreated zip was not an "adept epub."

KevinH · 03-16-2010, 04:48 PM

Hi,

Please make sure that the mimetype file is not compressed and is the first file in the archive.

The command line way to do this is:

zip -X0 "full path to new epub file" mimetype

then followed by

zip -rDX9 "full path to new epub file" * -x mimetype

This is effectively what the epub Zip for Mac OSX tool does:

More info can be found here:

https://www.mobileread.com/forums/showthread.php?t=55681

I am sure there must be something that does this automatically for Windows but being a Mac user, I don't know the name of it offhand.

Sorry I can't be more help.

Kevin

Desertway · 03-16-2010, 05:07 PM

Thanks. I can't find anything automated, and otherwise we are now over my head. I appreciate your efforts.

pietvo · 03-16-2010, 07:41 PM

Quote:

Originally Posted by Desertway

With ineptepub.pyw v.4.1, I get the error "List assignment index out of range."

Is there anything else I can try? Thanks.

Make sure you have ineptkey version 4.3 with ineptepub.pyw v.4.1.

wallcraft · 03-16-2010, 09:13 PM

Quote:

Originally Posted by Desertway

With ineptepub.pyw v.4.1, I get the error "List assignment index out of range."

I started seeing this (with some version of ineptepub) even with previously circumventable ebooks. I reinstalled Pycrypto and the problem went away.

Desertway · 03-16-2010, 10:10 PM

Quote:

Originally Posted by pietvo

Make sure you have ineptkey version 4.3 with ineptepub.pyw v.4.1.

It worked! In all my newbee exploration of all the different versions that have been mentioned, I must have missed this particular combination. Grazi!

03-05-2010, 03:16 AM	#631
sapient Member Posts: 17 Karma: 10 Join Date: Jul 2009 Device: palm tx	Thanks for the info guys. I have the general dep setting set to check essential windows files only, so why should it check the python executables? I changed it to "on for everything except..." but when I try to exclude the python executables from dep, I get an error that 64bit executables can't be excluded - yes, I am using the 64bit version of python with the 64bit version of pycrypto. Edit: I tried installing the 32bit versions, and it is working fine. It seems the problem is with the 64bit versions, and although my memory is not what it used to be, I seem to recall that it used to work with the 64bit python too in the past... oh well Last edited by sapient; 03-05-2010 at 03:51 AM.

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03-05-2010, 06:11 AM	#632
pietvo Reader Posts: 520 Karma: 24612 Join Date: Aug 2009 Location: Utrecht, NL Device: Kobo Aura 2, iPhone, iPad	cpuid0() works through a C interface. It could well be that it is designed to work with 32 bit but not yet adapted to 64 bit.

03-15-2010, 07:14 AM	#634
pietvo Reader Posts: 520 Karma: 24612 Join Date: Aug 2009 Location: Utrecht, NL Device: Kobo Aura 2, iPhone, iPad	Have you installed Python and PyCrypto?

03-16-2010, 03:25 PM	#636
Desertway Addict Posts: 357 Karma: 3070142 Join Date: Mar 2010 Device: Kindle Oasis 3	I have been working on this for a few days, on both WinXP and Win7 machines, with no luck. I have Python 2.6.4 and Pycrypto 2.1.0 installed. I have the latest version of ADE, and have no problem generating the key with ineptkey.pyw. But I cannot decrypt my epubs, even though the dialog box comes up and I am (I believe) inputting the correct path information for the files. Using ineptepub.pyw v.4, I get the error "Problem Decrypting Session Key". With ineptepub.pyw v.4.1, I get the error "List assignment index out of range." Is there anything else I can try? Thanks.

03-16-2010, 03:58 PM	#637
ATimson Evangelist Posts: 456 Karma: 1044878 Join Date: Apr 2009 Device: Kindle Paperwhite 4	Try using the "..." button to set the path instead of typing it in. For some reason it gets picky sometimes when I try to manually specify the path...

03-16-2010, 04:15 PM	#638
KevinH Sigil Developer Posts: 9,070 Karma: 6361556 Join Date: Nov 2009 Device: many	One other thing to try ... Some ADE encrypted epubs have been created with a buggy zip program (epubs are zip containers). They use different names for the files in the zip central directory and the zip local name, and this confuses things greatly. So when I run into problems with an ADE epub. I literally unzip it and then rezip it manually with no compression (just storage) or with compression but I am careful to not compress so the mimetype and encryption files. There is even a special epub zip tool that handles rezipping of files to create an proper epub zip container for Mac OSX (on this forum). I am not sure what is available for Windows. Then I try using the decryption tool and it has always worked well after that.

03-16-2010, 04:48 PM	#641
KevinH Sigil Developer Posts: 9,070 Karma: 6361556 Join Date: Nov 2009 Device: many	Hi, Please make sure that the mimetype file is not compressed and is the first file in the archive. The command line way to do this is: zip -X0 "full path to new epub file" mimetype then followed by zip -rDX9 "full path to new epub file" * -x mimetype This is effectively what the epub Zip for Mac OSX tool does: More info can be found here: https://www.mobileread.com/forums/showthread.php?t=55681 I am sure there must be something that does this automatically for Windows but being a Mac user, I don't know the name of it offhand. Sorry I can't be more help. Kevin

03-16-2010, 05:07 PM	#642
Desertway Addict Posts: 357 Karma: 3070142 Join Date: Mar 2010 Device: Kindle Oasis 3	Thanks. I can't find anything automated, and otherwise we are now over my head. I appreciate your efforts.